Study on Layered Basin Earth Excavation Construction Technology

2011 ◽  
Vol 94-96 ◽  
pp. 1787-1792
Author(s):  
Wei Guo Yuan ◽  
Hai Ying Chen
Keyword(s):  
Cost Accounting ◽  
Construction Technology ◽  
Tunnel Engineering ◽  
Road Tunnel ◽  
Construction Technique ◽  
Excavation Methods

Through comprehensively analyzing of the present earth excavation methods and combined with Kangwang road tunnel engineering earth excavation, proposing the layered basin earth excavation construction technology of excavation. We put the layered basin earth excavation construction technology of excavation in the practice of Kangwang road tunnel earth excavation, applying "MIDAS-GTS" software to simulate and cost accounting, from the technical and economic sides to validate this new layered basin earth excavation is advanced. And finally puts forward the conditions for the layered basin earth excavation, this new layered basin earth excavation construction technique can be popularized.

Quality Monitoring for Waterproof and Drainage of Loess Road Tunnel

2011 ◽  
Vol 250-253 ◽  
pp. 1217-1221
Author(s):  
Jin Xing Lai ◽  
Jia Sun ◽  
Chi Liu
Keyword(s):  
Gansu Province ◽  
Quality Monitoring ◽  
Construction Technology ◽  
Tunnel Engineering ◽  
Road Tunnel ◽  
West China ◽  
Construction Optimization ◽  
Technical Guidance ◽  
Main Construction

Based on practice road tunnel engineering in Gansu province and near areas in west china, the main construction technology and emphasis of quality monitoring of waterproof and drainage of loess road tunnel are analyzed. Requirements of waterproof and drainage construction and methods of quality monitoring are obtained. Principle of design for waterproof and drainage in highway tunnels construction is provided. The analysis results provide technical guidance for the waterproof construction optimization of loess tunnels.

Study of Visual Simulation for Decomposition Assembly Tower by Derrick Supported by Inner Suspension and Inner Backstay

2013 ◽  
Vol 838-841 ◽  
pp. 388-391
Author(s):  
Yan Hai Wang ◽  
Ming Hu
Keyword(s):  
Transmission Lines ◽  
Three Dimensional ◽  
Organization Design ◽  
Visual Simulation ◽  
Construction Technology ◽  
Construction Process ◽  
Three Dimensional Model ◽  
Construction Technique ◽  
Scheme Optimization ◽  
Construction Organization

Derrick supported by inner suspension and inner backstay group tower is a construction technique commonly used in the construction of overhead transmission lines, the locale sketch and construction technique are complex, and not conducive to the analysis of the key construction and improve the level of decision-making. Through analysis assembly tower construction technology of derrick supported by inner suspension and inner backstay, using engineering visualization design software 3ds Max, the establishment of a three-dimensional model of the tower, the pole, tackle. According to the construction process for dynamic visual simulation, accurate image show the complexity of the construction process. Visual simulation provides an intuitive basis for the construction organization design and construction scheme optimization; enhance the level of construction management.

The Green Degrees of Single Construction Technology Assessment System Using AHP-Fuzzy

2013 ◽  
Vol 671-674 ◽  
pp. 2636-2643 ◽  
Author(s):  
Cheng Yi ◽  
Jun Yi Huang ◽  
Fu Yan Sun ◽  
Meng Lan Lin ◽  
Qiang Liu
Keyword(s):  
Life Cycle ◽  
Evaluation System ◽  
Fuzzy Comprehensive Evaluation ◽  
Green Technology ◽  
Assessment System ◽  
Construction Technology ◽  
Construction Technique ◽  
Green Construction ◽  
The Impact ◽  
Whole Life Cycle

According to the idea of the life cycle assessment method (LCA), the consumption of the energy and material, which is involved in the whole life cycle in each phase of single green construction technique, and the impact on the environment, is discussed. Based on the fuzzy comprehensive evaluation theory, a green degree evaluation system is established. The Analytic Hierarchy Process method (AHP) is adopted to establish green assessment system of the hierarchical structure model, and by means of 10/10-18/2 scaling method through pairwise comparison on tectonic judgment matrix of each level, the weight of each affecting factor is ultimately determined. Finally, VB program is used to compile visual programs of green degrees assessment. The quantitative assessment of integrated green degree for green construction technology is obtained, after inputting the score of the corresponding index, with reference to the influence of the factors assessment standards. By verifying rationality of the assessment system, the study proves that the system plays a guidance role in the self-assessment and reasonable construction for the construction of green technology.

Application of High Pressure Jet Grouting Pile with Undrained Open Caisson Combined Construction Technology in the Protection of Yangtze River Levee

2013 ◽  
Vol 368-370 ◽  
pp. 1443-1449
Author(s):  
Jun Yang Wei ◽  
Bao Tian Wang ◽  
Jing Hua Zhang ◽  
Bin Zhou
Keyword(s):  
High Pressure ◽  
Yangtze River ◽  
Engineering Application ◽  
Construction Technology ◽  
Deep Foundation ◽  
Effective Protection ◽  
Foundation Pit ◽  
Construction Technique ◽  
Deep Foundation Pit ◽  
Jet Grouting

It is easy to cause Yangtze River embankment soil slip or even collapse to have a deep foundation pit construction adjacent to Yangtze River outside embankment，with lots of risk . A new combined construction technique for large caisson is presented. The construction technology, the earthwork excavation of deep high pressure jet grouting pile combined with undrained open caisson construction technology, with data monitoring for the open caisson excavation control is adopted. This study mainly summarizes the advantages of deep high pressure jet grouting pile combined with undrained caisson combined construction technology engineering application, and describes the process of the combined construction and measures of deviation correction.The new combining construction technique has made a relatively effective protection for the Yangtze River levee and its ecological environment,having great engineering application value to some similar engineering.

scholarly journals Study on Road Construction Technology of Low-lying and Swamp Area by Using Special Fine Sand

2020 ◽  
Vol 2 (1) ◽  
pp. 26
Author(s):  
Zheng Wu ◽  
Fei Yang ◽  
Ke Lee
Keyword(s):  
Quality Control ◽  
Road Construction ◽  
Fine Sand ◽  
Construction Technology ◽  
Site Condition ◽  
Construction Technique ◽  
Supporting System ◽  
Construction Techniques

According to the site condition of one of the oversea project located in the low-lying and swamp area, special fine sand with fine modulus in values of 0.42-0.62 was used to construct roads in the area through special workmanship and construction techniques. Bamboo materials are designed as piles and supporting system in a reasonable arrangement. The paper provides calculation details of the supporting system of bamboo materials, outlines the construction procedures and construction technique, and describes the contents of quality control and safety construction. It provides good references for road construction in low-lying and swamp areas in similar countries.

Numerical Model of Road Tunnel with Void between the Liner and Surrounding Rock and its Application

2011 ◽  
Vol 261-263 ◽  
pp. 1257-1260
Author(s):  
Jia Yan Zheng ◽  
Hai Jing Liu
Keyword(s):  
Numerical Model ◽  
Safety Factor ◽  
Surrounding Rock ◽  
Contact Method ◽  
Tunnel Engineering ◽  
Road Tunnel ◽  
Decrease Rate ◽  
Status Assessment ◽  
Operation Status ◽  
The Relationship

Void between road tunnel liner and surrounding rock is one of the most frequent defects in tunnel engineering. In this paper, contact method is introduced into the numerical model to simulate the interaction between tunnel liner and surrounding rock. The relationship between the key parameters of void and safety factor of the structure is systematically studied with the numerical model. Results show that position and width of void are the key parameters, while depth and shape of void are unimportant and negligible. It can also be concluded that the decrease rate of safety factor to the increase of circular width is almost the same while void is in different position. Conclusions gained are helpful for inspection, operation status assessment and rehabilitation of road tunnel in future.

The Technique of Deep Foundation Pit and Pile Foundation Construction

2012 ◽  
Vol 204-208 ◽  
pp. 308-311 ◽  
Author(s):  
Rui Li ◽  
Yi Qiao ◽  
Yong Jie Liu
Keyword(s):  
Pile Foundation ◽  
Construction Technology ◽  
Deep Foundation ◽  
Foundation Pit ◽  
Construction Technique ◽  
Deep Foundation Pit ◽  
Foundation Construction ◽  
High Rise ◽  
High Rise Building ◽  
Building Project

As the population growth and land resources declining, high-rise building project is increasingly common in the construction work. Through in-depth thinking and active exploration, specific attention to matters of deep foundation pit and pile foundation construction technique, which is the key construction techniques in the high-rise building project, was summarized in this article. It suggests to make a careful and detailed geological survey, and then choose the right design program and develop a reliable construction plans. This scheme was proved to be a useful reference and guidance for the development of high-rise building construction technology.

Construction Technique and Quality Control of Sup-25 Asphalt Mixture Used in Hao-Tong Highway

2014 ◽  
Vol 599 ◽  
pp. 287-290 ◽  
Author(s):  
Peng Cui ◽  
Yang Sang ◽  
Bao Quan Li ◽  
Hai Xia Zhang
Keyword(s):  
Quality Control ◽  
Water Permeability ◽  
Asphalt Concrete ◽  
Design Method ◽  
Asphalt Mixture ◽  
Construction Technology ◽  
Test Results ◽  
Construction Quality ◽  
Construction Technique ◽  
Marshall Test

In this paper, the asphalt mixture proportions for Hao-Tong highway was investigated using Sup25 gradation design method. Marshall Test was applied to estimate performance of asphalt concrete. Based on the actual project application, the methods of construction technology and construction quality control of Sup25 asphalt mixture were discussed in this paper. The test results showed that water permeability, degree of compaction and rutting of the Sup25 asphalt mixture layer meet the requirements of Chinese specification.

Detection and Safety Evaluation on Cavity in Tunnel Lining

2013 ◽  
Vol 438-439 ◽  
pp. 983-986
Author(s):  
Ze Pei Xu ◽  
Xi Bing Li
Keyword(s):  
Concrete Structure ◽  
Safety Evaluation ◽  
Reference Method ◽  
Tunnel Lining ◽  
Construction Technology ◽  
Tunnel Structure ◽  
Tunnel Engineering ◽  
Composite Lining

Due to the construction technology and concrete structure of tunnel, cavity can be engendered in the composite lining. To evaluate the influence of the cavity on tunnel lining, cavity must be first detected, and safety evaluation of tunnel structure can be taken with the detection results. With the tunnel engineering example, a typical section chosen has been checked, and the safety of cavity was evaluated. It can provide a reference method for the detection and safety evaluation on cavity in tunnel lining.

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